disk-utils/fdisk.c

   1 /*
   2  * SPDX-License-Identifier: GPL-1.0-or-later
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 1 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * Copyright (C) 1992  A. V. Le Blanc (LeBlanc@mcc.ac.uk)
  10  * Copyright (C) 2012  Davidlohr Bueso <dave@gnu.org>
  11  *
  12  * Copyright (C) 2007-2013 Karel Zak <kzak@redhat.com>
  13  */
  14 #include <unistd.h>
  15 #include <stdio.h>
  16 #include <stdlib.h>
  17 #include <string.h>
  18 #include <fcntl.h>
  19 #include <ctype.h>
  20 #include <errno.h>
  21 #include <getopt.h>
  22 #include <sys/stat.h>
  23 #include <sys/time.h>
  24 #include <time.h>
  25 #include <limits.h>
  26 #include <signal.h>
  27 #include <poll.h>
  28 #include <libsmartcols.h>
  29 #ifdef HAVE_LIBREADLINE
  30 # define _FUNCTION_DEF
  31 # include <readline/readline.h>
  32 #endif
  33
  34 #include "c.h"
  35 #include "xalloc.h"
  36 #include "all-io.h"
  37 #include "nls.h"
  38 #include "rpmatch.h"
  39 #include "blkdev.h"
  40 #include "mbsalign.h"
  41 #include "pathnames.h"
  42 #include "canonicalize.h"
  43 #include "strutils.h"
  44 #include "closestream.h"
  45 #include "pager.h"
  46
  47 #include "fdisk.h"
  48
  49 #include "pt-sun.h"             /* to toggle flags */
  50
  51 #ifdef HAVE_LINUX_COMPILER_H
  52 # include <linux/compiler.h>
  53 #endif
  54 #ifdef HAVE_LINUX_BLKPG_H
  55 # include <linux/blkpg.h>
  56 #endif
  57
  58 #ifdef __linux__
  59 # ifdef HAVE_LINUX_FS_H
  60 #  include <linux/fs.h>
  61 # endif
  62 #endif
  63
  64 int pwipemode = WIPEMODE_AUTO;
  65 int device_is_used;
  66 int is_interactive;
  67 struct fdisk_table *original_layout;
  68
  69 static int wipemode = WIPEMODE_AUTO;
  70
  71 /*
  72  * fdisk debug stuff (see fdisk.h and include/debug.h)
  73  */
  74 UL_DEBUG_DEFINE_MASK(fdisk);
  75 UL_DEBUG_DEFINE_MASKNAMES(fdisk) = UL_DEBUG_EMPTY_MASKNAMES;
  76
  77 static void fdiskprog_init_debug(void)
  78 {
  79         __UL_INIT_DEBUG_FROM_ENV(fdisk, FDISKPROG_DEBUG_, 0, FDISK_DEBUG);
  80 }
  81
  82 static void reply_sighandler(int sig __attribute__((unused)))
  83 {
  84         DBG(ASK, ul_debug("got signal"));
  85 }
  86
  87 static int reply_running;
  88
  89 #ifdef HAVE_LIBREADLINE
  90 static char *reply_line;
  91
  92 static void reply_linehandler(char *line)
  93 {
  94         reply_line = line;
  95         reply_running = 0;
  96         rl_callback_handler_remove();   /* avoid duplicate prompt */
  97 }
  98 #endif
  99
 100 int get_user_reply(const char *prompt, char *buf, size_t bufsz)
 101 {
 102         struct sigaction oldact, act = {
 103                 .sa_handler = reply_sighandler
 104         };
 105         struct pollfd fds[] = {
 106                 { .fd = fileno(stdin), .events = POLLIN }
 107         };
 108         size_t sz;
 109         int ret = 0;
 110
 111         DBG(ASK, ul_debug("asking for user reply %s", is_interactive ? "[interactive]" : ""));
 112
 113         sigemptyset(&act.sa_mask);
 114         sigaction(SIGINT, &act, &oldact);
 115
 116 #ifdef HAVE_LIBREADLINE
 117         if (is_interactive)
 118                 rl_callback_handler_install(prompt, reply_linehandler);
 119 #endif
 120         errno = 0;
 121         reply_running = 1;
 122         do {
 123                 int rc;
 124
 125                 *buf = '\0';
 126 #ifdef HAVE_LIBREADLINE
 127                 if (!is_interactive)
 128 #endif
 129                 {
 130                         fputs(prompt, stdout);
 131                         fflush(stdout);
 132                 }
 133
 134                 rc = poll(fds, 1, -1);
 135                 if (rc == -1 && errno == EINTR) {       /* interrupted by signal */
 136                         DBG(ASK, ul_debug("cancel by CTRL+C"));
 137                         ret = -ECANCELED;
 138                         goto done;
 139                 }
 140                 if (rc == -1 && errno != EAGAIN) {      /* error */
 141                         ret = -errno;
 142                         goto done;
 143                 }
 144 #ifdef HAVE_LIBREADLINE
 145                 if (is_interactive) {
 146                         /* read input and copy to buf[] */
 147                         rl_callback_read_char();
 148                         if (!reply_running && reply_line) {
 149                                 sz = strlen(reply_line);
 150                                 if (sz == 0)
 151                                         buf[sz++] = '\n';
 152                                 else
 153                                         memcpy(buf, reply_line, min(sz, bufsz));
 154                                 buf[min(sz, bufsz - 1)] = '\0';
 155                                 free(reply_line);
 156                                 reply_line = NULL;
 157                         }
 158                 } else
 159 #endif
 160                 {
 161                         if (!fgets(buf, bufsz, stdin))
 162                                 *buf = '\0';
 163                         break;
 164                 }
 165         } while (reply_running);
 166
 167         if (!*buf) {
 168                 DBG(ASK, ul_debug("cancel by CTRL+D"));
 169                 ret = -ECANCELED;
 170                 clearerr(stdin);
 171                 goto done;
 172         }
 173
 174         /*
 175          * cleanup the reply
 176          */
 177         sz = ltrim_whitespace((unsigned char *) buf);
 178         if (sz && *(buf + sz - 1) == '\n')
 179                 *(buf + sz - 1) = '\0';
 180
 181 done:
 182 #ifdef HAVE_LIBREADLINE
 183         if (is_interactive)
 184                 rl_callback_handler_remove();
 185 #endif
 186         sigaction(SIGINT, &oldact, NULL);
 187         DBG(ASK, ul_debug("user's reply: >>>%s<<< [rc=%d]", buf, ret));
 188         return ret;
 189 }
 190
 191 static int ask_menu(struct fdisk_context *cxt, struct fdisk_ask *ask,
 192                     char *buf, size_t bufsz)
 193
 194 {
 195         const char *q = fdisk_ask_get_query(ask);
 196         int dft = fdisk_ask_menu_get_default(ask);
 197
 198         if (q) {
 199                 fputs(q, stdout);               /* print header */
 200                 fputc('\n', stdout);
 201         }
 202
 203         do {
 204                 char prompt[128];
 205                 int key, c, rc;
 206                 const char *name, *desc;
 207                 size_t i = 0;
 208
 209                 /* print menu items */
 210                 while (fdisk_ask_menu_get_item(ask, i++, &key, &name, &desc) == 0) {
 211                         if (desc)
 212                                 fprintf(stdout, "   %c   %s (%s)\n", key, name, desc);
 213                         else
 214                                 fprintf(stdout, "   %c   %s\n", key, name);
 215                 }
 216
 217                 /* ask for key */
 218                 snprintf(prompt, sizeof(prompt), _("Select (default %c): "), dft);
 219                 rc = get_user_reply(prompt, buf, bufsz);
 220                 if (rc)
 221                         return rc;
 222                 if (!*buf) {
 223                         fdisk_info(cxt, _("Using default response %c."), dft);
 224                         c = dft;
 225                 } else
 226                         c = tolower(buf[0]);
 227
 228                 /* check result */
 229                 i = 0;
 230                 while (fdisk_ask_menu_get_item(ask, i++, &key, NULL, NULL) == 0) {
 231                         if (c == key) {
 232                                 fdisk_ask_menu_set_result(ask, c);
 233                                 return 0;       /* success */
 234                         }
 235                 }
 236                 fdisk_warnx(cxt, _("Value out of range."));
 237         } while (1);
 238
 239         return -EINVAL;
 240 }
 241
 242
 243 #define tochar(num)     ((int) ('a' + num - 1))
 244 static int ask_number(struct fdisk_context *cxt,
 245                       struct fdisk_ask *ask,
 246                       char *buf, size_t bufsz)
 247 {
 248         char prompt[128] = { '\0' };
 249         const char *q = fdisk_ask_get_query(ask);
 250         const char *range = fdisk_ask_number_get_range(ask);
 251
 252         uint64_t dflt = fdisk_ask_number_get_default(ask),
 253                  low = fdisk_ask_number_get_low(ask),
 254                  high = fdisk_ask_number_get_high(ask);
 255         int inchar = fdisk_ask_number_inchars(ask);
 256
 257         assert(q);
 258
 259         DBG(ASK, ul_debug("asking for number "
 260                         "['%s', <%"PRIu64",%"PRIu64">, default=%"PRIu64", range: %s]",
 261                         q, low, high, dflt, range));
 262
 263         if (range && dflt >= low && dflt <= high) {
 264                 if (inchar)
 265                         snprintf(prompt, sizeof(prompt), _("%s (%s, default %c): "),
 266                                         q, range, tochar(dflt));
 267                 else
 268                         snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
 269                                         q, range, dflt);
 270
 271         } else if (dflt >= low && dflt <= high) {
 272                 if (inchar)
 273                         snprintf(prompt, sizeof(prompt), _("%s (%c-%c, default %c): "),
 274                                         q, tochar(low), tochar(high), tochar(dflt));
 275                 else
 276                         snprintf(prompt, sizeof(prompt),
 277                                         _("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
 278                                         q, low, high, dflt);
 279         } else if (inchar)
 280                 snprintf(prompt, sizeof(prompt), _("%s (%c-%c): "),
 281                                 q, tochar(low), tochar(high));
 282         else
 283                 snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
 284                                 q, low, high);
 285
 286         do {
 287                 int rc = get_user_reply(prompt, buf, bufsz);
 288                 uint64_t num = 0;
 289
 290                 if (rc)
 291                         return rc;
 292                 if (!*buf && dflt >= low && dflt <= high)
 293                         return fdisk_ask_number_set_result(ask, dflt);
 294
 295                 if (isdigit_string(buf)) {
 296                         char *end;
 297
 298                         errno = 0;
 299                         num = strtoumax(buf, &end, 10);
 300                         if (errno || buf == end || (end && *end))
 301                                 continue;
 302                 } else if (inchar && isalpha(*buf)) {
 303                         num = tolower(*buf) - 'a' + 1;
 304                 } else
 305                         rc = -EINVAL;
 306
 307                 if (rc == 0 && num >= low && num <= high)
 308                         return fdisk_ask_number_set_result(ask, num);
 309
 310                 fdisk_warnx(cxt, _("Value out of range."));
 311         } while (1);
 312
 313         return -1;
 314 }
 315
 316 static int ask_offset(struct fdisk_context *cxt,
 317                       struct fdisk_ask *ask,
 318                       char *buf, size_t bufsz)
 319 {
 320         char prompt[128] = { '\0' };
 321         const char *q = fdisk_ask_get_query(ask);
 322         const char *range = fdisk_ask_number_get_range(ask);
 323
 324         uint64_t dflt = fdisk_ask_number_get_default(ask),
 325                  low = fdisk_ask_number_get_low(ask),
 326                  high = fdisk_ask_number_get_high(ask),
 327                  base = fdisk_ask_number_get_base(ask);
 328
 329         assert(q);
 330
 331         DBG(ASK, ul_debug("asking for offset ['%s', <%"PRIu64",%"PRIu64">, base=%"PRIu64", default=%"PRIu64", range: %s]",
 332                                 q, low, high, base, dflt, range));
 333
 334         if (range && dflt >= low && dflt <= high)
 335                 snprintf(prompt, sizeof(prompt), _("%s (%s, default %"PRIu64"): "),
 336                          q, range, dflt);
 337         else if (dflt >= low && dflt <= high)
 338                 snprintf(prompt, sizeof(prompt),
 339                          _("%s (%"PRIu64"-%"PRIu64", default %"PRIu64"): "),
 340                          q, low, high, dflt);
 341         else
 342                 snprintf(prompt, sizeof(prompt), _("%s (%"PRIu64"-%"PRIu64"): "),
 343                          q, low, high);
 344
 345         do {
 346                 uintmax_t num = 0;
 347                 char sig = 0, *p;
 348                 int pwr = 0;
 349
 350                 int rc = get_user_reply(prompt, buf, bufsz);
 351                 if (rc)
 352                         return rc;
 353                 if (!*buf && dflt >= low && dflt <= high)
 354                         return fdisk_ask_number_set_result(ask, dflt);
 355
 356                 p = buf;
 357                 if (*p == '+' || *p == '-') {
 358                         sig = *buf;
 359                         p++;
 360                 }
 361
 362                 rc = ul_parse_size(p, &num, &pwr);
 363                 if (rc)
 364                         continue;
 365                 DBG(ASK, ul_debug("parsed size: %ju", num));
 366                 if (sig && pwr) {
 367                         /* +{size}{K,M,...} specified, the "num" is in bytes */
 368                         uint64_t unit = fdisk_ask_number_get_unit(ask);
 369                         num += unit/2;  /* round */
 370                         num /= unit;
 371                 }
 372                 if (sig == '+')
 373                         num += base;
 374                 else if (sig == '-' && fdisk_ask_number_is_wrap_negative(ask))
 375                         num = high - num;
 376                 else if (sig == '-')
 377                         num = base - num;
 378
 379                 DBG(ASK, ul_debug("final offset: %ju [sig: %c, power: %d, %s]",
 380                                 num, sig, pwr,
 381                                 sig ? "relative" : "absolute"));
 382                 if (num >= low && num <= high) {
 383                         if (sig && pwr)
 384                                 fdisk_ask_number_set_relative(ask, 1);
 385                         return fdisk_ask_number_set_result(ask, (uint64_t)num);
 386                 }
 387                 fdisk_warnx(cxt, _("Value out of range."));
 388         } while (1);
 389
 390         return -1;
 391 }
 392
 393 static unsigned int info_count;
 394
 395 static void fputs_info(struct fdisk_ask *ask, FILE *out)
 396 {
 397         const char *msg;
 398         assert(ask);
 399
 400         msg = fdisk_ask_print_get_mesg(ask);
 401         if (!msg)
 402                 return;
 403         if (info_count == 1)
 404                 fputc('\n', out);
 405
 406         fputs(msg, out);
 407         fputc('\n', out);
 408 }
 409
 410 int ask_callback(struct fdisk_context *cxt, struct fdisk_ask *ask,
 411                     void *data __attribute__((__unused__)))
 412 {
 413         int rc = 0;
 414         char buf[BUFSIZ] = { '\0' };
 415
 416         assert(cxt);
 417         assert(ask);
 418
 419         if (fdisk_ask_get_type(ask) != FDISK_ASKTYPE_INFO)
 420                 info_count = 0;
 421
 422         switch(fdisk_ask_get_type(ask)) {
 423         case FDISK_ASKTYPE_MENU:
 424                 return ask_menu(cxt, ask, buf, sizeof(buf));
 425         case FDISK_ASKTYPE_NUMBER:
 426                 return ask_number(cxt, ask, buf, sizeof(buf));
 427         case FDISK_ASKTYPE_OFFSET:
 428                 return ask_offset(cxt, ask, buf, sizeof(buf));
 429         case FDISK_ASKTYPE_INFO:
 430                 if (!fdisk_is_listonly(cxt))
 431                         info_count++;
 432                 fputs_info(ask, stdout);
 433                 break;
 434         case FDISK_ASKTYPE_WARNX:
 435                 fflush(stdout);
 436                 color_scheme_fenable("warn", UL_COLOR_RED, stderr);
 437                 fputs(fdisk_ask_print_get_mesg(ask), stderr);
 438                 color_fdisable(stderr);
 439                 fputc('\n', stderr);
 440                 break;
 441         case FDISK_ASKTYPE_WARN:
 442                 fflush(stdout);
 443                 color_scheme_fenable("warn", UL_COLOR_RED, stderr);
 444                 fputs(fdisk_ask_print_get_mesg(ask), stderr);
 445                 errno = fdisk_ask_print_get_errno(ask);
 446                 fprintf(stderr, ": %m\n");
 447                 color_fdisable(stderr);
 448                 break;
 449         case FDISK_ASKTYPE_YESNO:
 450                 fputc('\n', stdout);
 451                 do {
 452                         int x;
 453                         fputs(fdisk_ask_get_query(ask), stdout);
 454                         rc = get_user_reply(_(" [Y]es/[N]o: "), buf, sizeof(buf));
 455                         if (rc)
 456                                 break;
 457                         x = rpmatch(buf);
 458                         if (x == RPMATCH_YES || x == RPMATCH_NO) {
 459                                 fdisk_ask_yesno_set_result(ask, x);
 460                                 break;
 461                         }
 462                 } while(1);
 463                 DBG(ASK, ul_debug("yes-no ask: reply '%s' [rc=%d]", buf, rc));
 464                 break;
 465         case FDISK_ASKTYPE_STRING:
 466         {
 467                 char prmt[BUFSIZ];
 468                 snprintf(prmt, sizeof(prmt), "%s: ", fdisk_ask_get_query(ask));
 469                 fputc('\n', stdout);
 470                 rc = get_user_reply(prmt, buf, sizeof(buf));
 471                 if (rc == 0)
 472                         fdisk_ask_string_set_result(ask, xstrdup(buf));
 473                 DBG(ASK, ul_debug("string ask: reply '%s' [rc=%d]", buf, rc));
 474                 break;
 475         }
 476         default:
 477                 warnx(_("internal error: unsupported dialog type %d"), fdisk_ask_get_type(ask));
 478                 return -EINVAL;
 479         }
 480         return rc;
 481 }
 482
 483 static struct fdisk_parttype *ask_partition_type(struct fdisk_context *cxt, int *canceled)
 484 {
 485         const char *q;
 486         struct fdisk_label *lb;
 487
 488         assert(cxt);
 489         lb = fdisk_get_label(cxt, NULL);
 490
 491         if (!lb)
 492                 return NULL;
 493
 494         *canceled = 0;
 495
 496         if (fdisk_label_has_parttypes_shortcuts(lb))
 497                  q = fdisk_label_has_code_parttypes(lb) ?
 498                         _("Hex code or alias (type L to list all): ") :
 499                         _("Partition type or alias (type L to list all): ");
 500         else
 501                 q = fdisk_label_has_code_parttypes(lb) ?
 502                         _("Hex code (type L to list all codes): ") :
 503                         _("Partition type (type L to list all types): ");
 504         do {
 505                 char buf[256] = { '\0' };
 506                 int rc = get_user_reply(q, buf, sizeof(buf));
 507
 508                 if (rc) {
 509                         if (rc == -ECANCELED)
 510                                 *canceled = 1;
 511                         break;
 512                 }
 513
 514                 if (buf[1] == '\0' && toupper(*buf) == 'L')
 515                         list_partition_types(cxt);
 516                 else if (*buf) {
 517                         struct fdisk_parttype *t = fdisk_label_advparse_parttype(lb, buf,
 518                                                                 FDISK_PARTTYPE_PARSE_DATA
 519                                                                 | FDISK_PARTTYPE_PARSE_ALIAS
 520                                                                 | FDISK_PARTTYPE_PARSE_NAME
 521                                                                 | FDISK_PARTTYPE_PARSE_SEQNUM);
 522                         if (!t)
 523                                 fdisk_info(cxt, _("Failed to parse '%s' partition type."), buf);
 524                         return t;
 525                 }
 526         } while (1);
 527
 528         return NULL;
 529 }
 530
 531
 532 void list_partition_types(struct fdisk_context *cxt)
 533 {
 534         size_t ntypes = 0, next = 0;
 535         struct fdisk_label *lb;
 536         int pager = 0;
 537
 538         assert(cxt);
 539         lb = fdisk_get_label(cxt, NULL);
 540         if (!lb)
 541                 return;
 542         ntypes = fdisk_label_get_nparttypes(lb);
 543         if (!ntypes)
 544                 return;
 545
 546         if (fdisk_label_has_code_parttypes(lb)) {
 547                 /*
 548                  * Prints in 4 columns in format <hex> <name>
 549                  */
 550                 size_t last[4], done = 0, size;
 551                 int i;
 552
 553                 size = ntypes;
 554
 555                 for (i = 3; i >= 0; i--)
 556                         last[3 - i] = done += (size + i - done) / (i + 1);
 557                 i = done = 0;
 558
 559                 do {
 560                         #define NAME_WIDTH 15
 561                         char name[NAME_WIDTH * MB_LEN_MAX];
 562                         size_t width = NAME_WIDTH;
 563                         const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, next);
 564                         size_t ret;
 565
 566                         if (fdisk_parttype_get_name(t)) {
 567                                 printf("%s%02x ", i ? "  " : "\n",
 568                                                 fdisk_parttype_get_code(t));
 569                                 ret = mbsalign(_(fdisk_parttype_get_name(t)),
 570                                                 name, sizeof(name),
 571                                                 &width, MBS_ALIGN_LEFT, 0);
 572
 573                                 if (ret == (size_t)-1 || ret >= sizeof(name))
 574                                         printf("%-15.15s",
 575                                                 _(fdisk_parttype_get_name(t)));
 576                                 else
 577                                         fputs(name, stdout);
 578                         }
 579
 580                         next = last[i++] + done;
 581                         if (i > 3 || next >= last[i]) {
 582                                 i = 0;
 583                                 next = ++done;
 584                         }
 585                 } while (done < last[0]);
 586
 587                 putchar('\n');
 588         } else {
 589                 /*
 590                  * Prints 1 column in format <idx> <name> <typestr>
 591                  */
 592                 size_t i;
 593
 594                 pager_open();
 595                 pager = 1;
 596
 597                 for (i = 0; i < ntypes; i++) {
 598                         const struct fdisk_parttype *t = fdisk_label_get_parttype(lb, i);
 599                         printf("%3zu %-30s %s\n", i + 1,
 600                                         fdisk_parttype_get_name(t),
 601                                         fdisk_parttype_get_string(t));
 602                 }
 603
 604         }
 605
 606
 607         /*
 608          * Aliases
 609          */
 610         if (fdisk_label_has_parttypes_shortcuts(lb)) {
 611                 const char *alias = NULL, *typestr = NULL;
 612                 int rc = 0;
 613
 614                 fputs(_("\nAliases:\n"), stdout);
 615
 616                 for (next = 0; rc == 0 || rc == 2; next++) {
 617                         /* rc: <0 error, 0 success, 1 end, 2 deprecated */
 618                         rc = fdisk_label_get_parttype_shortcut(lb,
 619                                         next, &typestr, NULL, &alias);
 620                         if (rc == 0)
 621                                 printf("   %-14s - %s\n", alias, typestr);
 622                 }
 623         }
 624
 625         if (pager)
 626                 pager_close();
 627
 628 }
 629
 630 void toggle_dos_compatibility_flag(struct fdisk_context *cxt)
 631 {
 632         struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
 633         int flag;
 634
 635         if (!lb)
 636                 return;
 637
 638         flag = !fdisk_dos_is_compatible(lb);
 639         fdisk_info(cxt, flag ?
 640                         _("DOS Compatibility flag is set (DEPRECATED!)") :
 641                         _("DOS Compatibility flag is not set"));
 642
 643         fdisk_dos_enable_compatible(lb, flag);
 644
 645         if (fdisk_is_label(cxt, DOS))
 646                 fdisk_reset_alignment(cxt);     /* reset the current label */
 647 }
 648
 649 static int strtosize_sectors(const char *str, unsigned long sector_size,
 650                              uintmax_t *res)
 651 {
 652         size_t len = strlen(str);
 653         int insec = 0;
 654         int rc;
 655         char *buf = NULL;
 656
 657         if (!len)
 658                 return 0;
 659
 660         if (str[len - 1] == 'S' || str[len - 1] == 's') {
 661                 insec = 1;
 662                 str = buf = strndup(str, len - 1); /* strip trailing 's' */
 663                 if (!str)
 664                         return -errno;
 665         }
 666
 667         rc = strtosize(str, res);
 668         if (rc == 0 && insec)
 669                 *res *= sector_size;
 670
 671         free(buf);
 672         return rc;
 673 }
 674
 675 void resize_partition(struct fdisk_context *cxt)
 676 {
 677         struct fdisk_partition *pa = NULL, *npa = NULL, *next = NULL;
 678         char *query = NULL, *response = NULL, *default_size;
 679         struct fdisk_table *tb = NULL;
 680         uint64_t max_size, size, secs;
 681         size_t i;
 682         int rc;
 683
 684         assert(cxt);
 685
 686         rc = fdisk_ask_partnum(cxt, &i, FALSE);
 687         if (rc)
 688                 goto err;
 689
 690         rc = fdisk_partition_get_max_size(cxt, i, &max_size);
 691         if (rc)
 692                 goto err;
 693
 694         max_size *= fdisk_get_sector_size(cxt);
 695
 696         default_size = size_to_human_string(0, max_size);
 697         xasprintf(&query, _("New <size>{K,M,G,T,P} in bytes or <size>S in sectors (default %s)"),
 698                   default_size);
 699         free(default_size);
 700
 701         rc = fdisk_ask_string(cxt, query, &response);
 702         if (rc)
 703                 goto err;
 704
 705         size = max_size;
 706         rc = strtosize_sectors(response, fdisk_get_sector_size(cxt), &size);
 707         if (rc || size > max_size) {
 708                 fdisk_warnx(cxt, _("Invalid size"));
 709                 goto err;
 710         }
 711
 712         npa = fdisk_new_partition();
 713         if (!npa)
 714                 goto err;
 715
 716         secs = size / fdisk_get_sector_size(cxt);
 717         fdisk_partition_size_explicit(npa, 1);
 718         fdisk_partition_set_size(npa, secs);
 719
 720         rc = fdisk_set_partition(cxt, i, npa);
 721         if (rc)
 722                 goto err;
 723
 724         fdisk_info(cxt, _("Partition %zu has been resized."), i + 1);
 725
 726 out:
 727         free(query);
 728         free(response);
 729         fdisk_unref_partition(next);
 730         fdisk_unref_partition(pa);
 731         fdisk_unref_partition(npa);
 732         fdisk_unref_table(tb);
 733         return;
 734
 735 err:
 736         fdisk_warnx(cxt, _("Could not resize partition %zu: %s"),
 737                     i + 1, strerror(-rc));
 738         goto out;
 739 }
 740
 741 void change_partition_type(struct fdisk_context *cxt)
 742 {
 743         size_t i;
 744         struct fdisk_parttype *t = NULL;
 745         struct fdisk_partition *pa = NULL;
 746         const char *old = NULL;
 747         int canceled = 0;
 748
 749         assert(cxt);
 750
 751         if (fdisk_ask_partnum(cxt, &i, FALSE))
 752                 return;
 753
 754         if (fdisk_get_partition(cxt, i, &pa)) {
 755                 fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
 756                 return;
 757         }
 758
 759         t = (struct fdisk_parttype *) fdisk_partition_get_type(pa);
 760         old = t ? fdisk_parttype_get_name(t) : _("Unknown");
 761
 762         do {
 763                 t = ask_partition_type(cxt, &canceled);
 764                 if (canceled)
 765                         break;
 766         } while (!t);
 767
 768         if (canceled == 0 && t && fdisk_set_partition_type(cxt, i, t) == 0)
 769                 fdisk_info(cxt,
 770                         _("Changed type of partition '%s' to '%s'."),
 771                         old, t ? fdisk_parttype_get_name(t) : _("Unknown"));
 772         else
 773                 fdisk_info(cxt,
 774                         _("Type of partition %zu is unchanged: %s."),
 775                         i + 1, old);
 776
 777         fdisk_unref_partition(pa);
 778         fdisk_unref_parttype(t);
 779 }
 780
 781 #ifdef BLKDISCARD
 782
 783 static int do_discard(struct fdisk_context *cxt, struct fdisk_partition *pa)
 784 {
 785         char buf[512];
 786         unsigned long ss;
 787         uint64_t range[2];
 788         int yes = 0;
 789
 790         ss = fdisk_get_sector_size(cxt);
 791
 792         range[0] = (uint64_t) fdisk_partition_get_start(pa);
 793         range[1] = (uint64_t) fdisk_partition_get_size(pa);
 794
 795         snprintf(buf, sizeof(buf), _("All data in the region (%"PRIu64
 796                                      "-%"PRIu64") will be lost! Continue?"),
 797                         range[0], range[0] + range[1] - 1);
 798
 799         range[0] *= (uint64_t) ss;
 800         range[1] *= (uint64_t) ss;
 801
 802         fdisk_ask_yesno(cxt, buf, &yes);
 803         if (!yes)
 804                 return 1;
 805
 806         errno = 0;
 807         if (ioctl(fdisk_get_devfd(cxt), BLKDISCARD, &range)) {
 808                 fdisk_warn(cxt, _("BLKDISCARD ioctl failed"));
 809                 return -errno;
 810         }
 811         return 0;
 812 }
 813
 814 static void discard_partition(struct fdisk_context *cxt)
 815 {
 816         struct fdisk_partition *pa = NULL;
 817         size_t n = 0;
 818
 819         fdisk_info(cxt, _("\nThe partition sectors will be immediately discarded.\n"
 820                           "You can exit this dialog by pressing CTRL+C.\n"));
 821
 822         if (fdisk_ask_partnum(cxt, &n, FALSE))
 823                 goto done;
 824         if (fdisk_get_partition(cxt, n, &pa)) {
 825                 fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), n + 1);
 826                 goto done;
 827         }
 828
 829         if (!fdisk_partition_has_size(pa) || !fdisk_partition_has_start(pa)) {
 830                 fdisk_warnx(cxt, _("Partition %zu has an unspecified range."), n + 1);
 831                 goto done;
 832         }
 833
 834         if (do_discard(cxt, pa) == 0)
 835                 fdisk_info(cxt, _("Discarded sectors on partition %zu."), n + 1);
 836 done:
 837         fdisk_unref_partition(pa);
 838 }
 839
 840 static void discard_freespace(struct fdisk_context *cxt)
 841 {
 842         struct fdisk_partition *pa = NULL;
 843         struct fdisk_table *tb = NULL;
 844         size_t best = 0;
 845         uintmax_t n = 0;
 846         int ct;
 847
 848         ct = list_freespace_get_table(cxt, &tb, &best);
 849         if (ct <= 0) {
 850                 fdisk_info(cxt, _("No free space."));
 851                 goto done;
 852         }
 853         fdisk_info(cxt, _("\nThe unused sectors will be immediately discarded.\n"
 854                           "You can exit this dialog by pressing CTRL+C.\n"));
 855
 856         if (fdisk_ask_number(cxt, 1, best + 1, (uintmax_t) ct,
 857                                 _("Free space number"), &n) != 0)
 858                 goto done;
 859
 860         pa = fdisk_table_get_partition(tb, n - 1);
 861         if (!pa)
 862                 goto done;
 863
 864         if (!fdisk_partition_has_size(pa) || !fdisk_partition_has_start(pa)) {
 865                 fdisk_warnx(cxt, _("Free space %"PRIu64 "has an unspecified range"), n);
 866                 goto done;
 867         }
 868
 869         if (do_discard(cxt, pa) == 0)
 870                 fdisk_info(cxt, _("Discarded sectors on free space."));
 871 done:
 872         fdisk_unref_table(tb);
 873 }
 874
 875 void discard_sectors(struct fdisk_context *cxt)
 876 {
 877         int c;
 878
 879         if (fdisk_is_readonly(cxt)) {
 880                 fdisk_warnx(cxt, _("Discarding sectors is not possible in read-only mode."));
 881                 return;
 882         }
 883
 884         if (fdisk_ask_menu(cxt, _("Type of area to be discarded"),
 885                         &c, 'p', _("partition sectors"), 'p',
 886                                  _("free space sectors"), 'f', NULL) != 0)
 887                 return;
 888
 889         switch (c) {
 890         case 'p':
 891                 discard_partition(cxt);
 892                 break;
 893         case 'f':
 894                 discard_freespace(cxt);
 895                 break;
 896         }
 897 }
 898
 899 #else /* !BLKDISCARD */
 900 void discard_sectors(struct fdisk_context *cxt)
 901 {
 902         fdisk_warnx(cxt, _("Discard unsupported on your system."));
 903 }
 904 #endif /* BLKDISCARD */
 905
 906 int print_partition_info(struct fdisk_context *cxt)
 907 {
 908         struct fdisk_partition *pa = NULL;
 909         int rc = 0;
 910         size_t i, nfields;
 911         int *fields = NULL;
 912         struct fdisk_label *lb = fdisk_get_label(cxt, NULL);
 913
 914         if ((rc = fdisk_ask_partnum(cxt, &i, FALSE)))
 915                 return rc;
 916
 917         if ((rc = fdisk_get_partition(cxt, i, &pa))) {
 918                 fdisk_warnx(cxt, _("Partition %zu does not exist yet!"), i + 1);
 919                 return rc;
 920         }
 921
 922         if ((rc = fdisk_label_get_fields_ids_all(lb, cxt, &fields, &nfields)))
 923                 goto clean_data;
 924
 925         for (i = 0; i < nfields; ++i) {
 926                 int id = fields[i];
 927                 char *data = NULL;
 928                 const struct fdisk_field *fd = fdisk_label_get_field(lb, id);
 929
 930                 if (!fd)
 931                         continue;
 932
 933                 rc = fdisk_partition_to_string(pa, cxt, id, &data);
 934                 if (rc < 0)
 935                         goto clean_data;
 936                 if (!data || !*data)
 937                         continue;
 938                 fdisk_info(cxt, "%15s: %s", fdisk_field_get_name(fd), data);
 939                 free(data);
 940         }
 941
 942 clean_data:
 943         fdisk_unref_partition(pa);
 944         free(fields);
 945         return rc;
 946 }
 947
 948 static size_t skip_empty(const unsigned char *buf, size_t i, size_t sz)
 949 {
 950         size_t next;
 951         const unsigned char *p0 = buf + i;
 952
 953         for (next = i + 16; next < sz; next += 16) {
 954                 if (memcmp(p0, buf + next, 16) != 0)
 955                         break;
 956         }
 957
 958         return next == i + 16 ? i : next;
 959 }
 960
 961 static void dump_buffer(off_t base, unsigned char *buf, size_t sz)
 962 {
 963         size_t i, l, next = 0;
 964
 965         if (!buf)
 966                 return;
 967         for (i = 0, l = 0; i < sz; i++, l++) {
 968                 if (l == 0) {
 969                         if (!next)
 970                                 next = skip_empty(buf, i, sz);
 971                         printf("%08jx ", (intmax_t)base + i);
 972                 }
 973                 printf(" %02x", buf[i]);
 974                 if (l == 7)                             /* words separator */
 975                         fputs(" ", stdout);
 976                 else if (l == 15) {
 977                         fputc('\n', stdout);            /* next line */
 978                         l = -1;
 979                         if (next > i) {
 980                                 printf("*\n");
 981                                 i = next - 1;
 982                         }
 983                         next = 0;
 984                 }
 985         }
 986         if (l > 0)
 987                 printf("\n");
 988 }
 989
 990 static void dump_blkdev(struct fdisk_context *cxt, const char *name,
 991                         uint64_t offset, size_t size)
 992 {
 993         int fd = fdisk_get_devfd(cxt);
 994
 995         fdisk_info(cxt, _("\n%s: offset = %"PRIu64", size = %zu bytes."),
 996                         name, offset, size);
 997
 998         assert(fd >= 0);
 999
1000         if (lseek(fd, (off_t) offset, SEEK_SET) == (off_t) -1)
1001                 fdisk_warn(cxt, _("cannot seek"));
1002         else {
1003                 unsigned char *buf = xmalloc(size);
1004
1005                 if (read_all(fd, (char *) buf, size) != (ssize_t) size)
1006                         fdisk_warn(cxt, _("cannot read"));
1007                 else
1008                         dump_buffer(offset, buf, size);
1009                 free(buf);
1010         }
1011 }
1012
1013 void dump_firstsector(struct fdisk_context *cxt)
1014 {
1015         assert(cxt);
1016
1017         dump_blkdev(cxt, _("First sector"), 0, fdisk_get_sector_size(cxt));
1018 }
1019
1020 void dump_disklabel(struct fdisk_context *cxt)
1021 {
1022         int i = 0;
1023         const char *name = NULL;
1024         uint64_t offset = 0;
1025         size_t size = 0;
1026
1027         assert(cxt);
1028
1029         while (fdisk_locate_disklabel(cxt, i++, &name, &offset, &size) == 0 && size)
1030                 dump_blkdev(cxt, name, offset, size);
1031 }
1032
1033 static fdisk_sector_t get_dev_blocks(char *dev)
1034 {
1035         int fd, ret;
1036         fdisk_sector_t size;
1037
1038         if ((fd = open(dev, O_RDONLY|O_NONBLOCK)) < 0)
1039                 err(EXIT_FAILURE, _("cannot open %s"), dev);
1040         ret = blkdev_get_sectors(fd, (unsigned long long *) &size);
1041         close(fd);
1042         if (ret < 0)
1043                 err(EXIT_FAILURE, _("BLKGETSIZE ioctl failed on %s"), dev);
1044         return size/2;
1045 }
1046
1047
1048 void follow_wipe_mode(struct fdisk_context *cxt)
1049 {
1050         int dowipe = wipemode == WIPEMODE_ALWAYS ? 1 : 0;
1051
1052         if (isatty(STDIN_FILENO) && wipemode == WIPEMODE_AUTO)
1053                 dowipe = 1;     /* do it in interactive mode */
1054
1055         if (fdisk_is_ptcollision(cxt) && wipemode != WIPEMODE_NEVER)
1056                 dowipe = 1;     /* always remove old PT */
1057
1058         fdisk_enable_wipe(cxt, dowipe);
1059         if (dowipe)
1060                 fdisk_warnx(cxt, _(
1061                         "The device contains '%s' signature and it will be removed by a write command. "
1062                         "See fdisk(8) man page and --wipe option for more details."),
1063                         fdisk_get_collision(cxt));
1064         else
1065                 fdisk_warnx(cxt, _(
1066                         "The device contains '%s' signature and it may remain on the device. "
1067                         "It is recommended to wipe the device with wipefs(8) or "
1068                         "fdisk --wipe, in order to avoid possible collisions."),
1069                         fdisk_get_collision(cxt));
1070 }
1071
1072 static void __attribute__((__noreturn__)) usage(void)
1073 {
1074         FILE *out = stdout;
1075
1076         fputs(USAGE_HEADER, out);
1077
1078         fprintf(out,
1079               _(" %1$s [options] <disk>         change partition table\n"
1080                 " %1$s [options] -l [<disk>...] list partition table(s)\n"),
1081                program_invocation_short_name);
1082
1083         fputs(USAGE_SEPARATOR, out);
1084         fputs(_("Display or manipulate a disk partition table.\n"), out);
1085
1086         fputs(USAGE_OPTIONS, out);
1087         fputs(_(" -b, --sector-size <size>      physical and logical sector size\n"), out);
1088         fputs(_(" -B, --protect-boot            don't erase bootbits when creating a new label\n"), out);
1089         fputs(_(" -c, --compatibility[=<mode>]  mode is 'dos' or 'nondos' (default)\n"), out);
1090         fprintf(out,
1091               _(" -L, --color[=<when>]          colorize output (%s, %s or %s)\n"), "auto", "always", "never");
1092         fprintf(out,
1093                 "                                 %s\n", USAGE_COLORS_DEFAULT);
1094         fputs(_(" -l, --list                    display partitions and exit\n"), out);
1095         fputs(_(" -x, --list-details            like --list but with more details\n"), out);
1096
1097         fputs(_(" -n, --noauto-pt               don't create default partition table on empty devices\n"), out);
1098         fputs(_(" -o, --output <list>           output columns\n"), out);
1099         fputs(_(" -t, --type <type>             recognize specified partition table type only\n"), out);
1100         fputs(_(" -u, --units[=<unit>]          display units: 'cylinders' or 'sectors' (default)\n"), out);
1101         fputs(_(" -s, --getsz                   display device size in 512-byte sectors [DEPRECATED]\n"), out);
1102         fputs(_("     --bytes                   print SIZE in bytes rather than in human readable format\n"), out);
1103         fprintf(out,
1104               _("     --lock[=<mode>]           use exclusive device lock (%s, %s or %s)\n"), "yes", "no", "nonblock");
1105         fprintf(out,
1106               _(" -w, --wipe <mode>             wipe signatures (%s, %s or %s)\n"), "auto", "always", "never");
1107         fprintf(out,
1108               _(" -W, --wipe-partitions <mode>  wipe signatures from new partitions (%s, %s or %s)\n"), "auto", "always", "never");
1109
1110         fputs(USAGE_SEPARATOR, out);
1111         fputs(_(" -C, --cylinders <number>      specify the number of cylinders\n"), out);
1112         fputs(_(" -H, --heads <number>          specify the number of heads\n"), out);
1113         fputs(_(" -S, --sectors <number>        specify the number of sectors per track\n"), out);
1114
1115         fputs(USAGE_SEPARATOR, out);
1116         fprintf(out, USAGE_HELP_OPTIONS(31));
1117
1118         list_available_columns(out);
1119
1120         fprintf(out, USAGE_MAN_TAIL("fdisk(8)"));
1121         exit(EXIT_SUCCESS);
1122 }
1123
1124
1125 enum {
1126         ACT_FDISK = 0,  /* default */
1127         ACT_LIST,
1128         ACT_LIST_DETAILS,
1129         ACT_SHOWSIZE
1130 };
1131
1132 int main(int argc, char **argv)
1133 {
1134         int rc, i, c, act = ACT_FDISK, noauto_pt = 0;
1135         int colormode = UL_COLORMODE_UNDEF;
1136         struct fdisk_context *cxt;
1137         char *outarg = NULL;
1138         const char *devname, *lockmode = NULL;
1139         enum {
1140                 OPT_BYTES       = CHAR_MAX + 1,
1141                 OPT_LOCK
1142         };
1143         static const struct option longopts[] = {
1144                 { "bytes",          no_argument,       NULL, OPT_BYTES },
1145                 { "color",          optional_argument, NULL, 'L' },
1146                 { "compatibility",  optional_argument, NULL, 'c' },
1147                 { "cylinders",      required_argument, NULL, 'C' },
1148                 { "heads",          required_argument, NULL, 'H' },
1149                 { "sectors",        required_argument, NULL, 'S' },
1150                 { "getsz",          no_argument,       NULL, 's' },
1151                 { "help",           no_argument,       NULL, 'h' },
1152                 { "list",           no_argument,       NULL, 'l' },
1153                 { "list-details",   no_argument,       NULL, 'x' },
1154                 { "lock",           optional_argument, NULL, OPT_LOCK },
1155                 { "noauto-pt",      no_argument,       NULL, 'n' },
1156                 { "sector-size",    required_argument, NULL, 'b' },
1157                 { "type",           required_argument, NULL, 't' },
1158                 { "units",          optional_argument, NULL, 'u' },
1159                 { "version",        no_argument,       NULL, 'V' },
1160                 { "output",         required_argument, NULL, 'o' },
1161                 { "protect-boot",   no_argument,       NULL, 'B' },
1162                 { "wipe",           required_argument, NULL, 'w' },
1163                 { "wipe-partitions",required_argument, NULL, 'W' },
1164                 { NULL, 0, NULL, 0 }
1165         };
1166
1167         setlocale(LC_ALL, "");
1168         bindtextdomain(PACKAGE, LOCALEDIR);
1169         textdomain(PACKAGE);
1170         close_stdout_atexit();
1171
1172         fdisk_init_debug(0);
1173         scols_init_debug(0);
1174         fdiskprog_init_debug();
1175
1176         cxt = fdisk_new_context();
1177         if (!cxt)
1178                 err(EXIT_FAILURE, _("failed to allocate libfdisk context"));
1179
1180         fdisk_set_ask(cxt, ask_callback, NULL);
1181
1182         while ((c = getopt_long(argc, argv, "b:Bc::C:hH:lL::no:sS:t:u::vVw:W:x",
1183                                 longopts, NULL)) != -1) {
1184                 switch (c) {
1185                 case 'b':
1186                 {
1187                         size_t sz = strtou32_or_err(optarg,
1188                                         _("invalid sector size argument"));
1189                         if (sz != 512 && sz != 1024 && sz != 2048 && sz != 4096)
1190                                 errx(EXIT_FAILURE, _("invalid sector size argument"));
1191                         fdisk_save_user_sector_size(cxt, sz, sz);
1192                         break;
1193                 }
1194                 case 'B':
1195                         fdisk_enable_bootbits_protection(cxt, 1);
1196                         break;
1197                 case 'C':
1198                         fdisk_save_user_geometry(cxt,
1199                                 strtou32_or_err(optarg,
1200                                                 _("invalid cylinders argument")),
1201                                 0, 0);
1202                         break;
1203                 case 'c':
1204                         if (optarg) {
1205                                 /* this setting is independent on the current
1206                                  * actively used label
1207                                  */
1208                                 char *p = *optarg == '=' ? optarg + 1 : optarg;
1209                                 struct fdisk_label *lb = fdisk_get_label(cxt, "dos");
1210
1211                                 if (!lb)
1212                                         err(EXIT_FAILURE, _("not found DOS label driver"));
1213                                 if (strcmp(p, "dos") == 0)
1214                                         fdisk_dos_enable_compatible(lb, TRUE);
1215                                 else if (strcmp(p, "nondos") == 0)
1216                                         fdisk_dos_enable_compatible(lb, FALSE);
1217                                 else
1218                                         errx(EXIT_FAILURE, _("unknown compatibility mode '%s'"), p);
1219                         }
1220                         /* use default if no optarg specified */
1221                         break;
1222                 case 'H':
1223                         fdisk_save_user_geometry(cxt, 0,
1224                                 strtou32_or_err(optarg,
1225                                                 _("invalid heads argument")),
1226                                 0);
1227                         break;
1228                 case 'S':
1229                         fdisk_save_user_geometry(cxt, 0, 0,
1230                                 strtou32_or_err(optarg,
1231                                         _("invalid sectors argument")));
1232                         break;
1233                 case 'l':
1234                         act = ACT_LIST;
1235                         break;
1236                 case 'x':
1237                         act = ACT_LIST_DETAILS;
1238                         break;
1239                 case 'L':
1240                         colormode = UL_COLORMODE_AUTO;
1241                         if (optarg)
1242                                 colormode = colormode_or_err(optarg);
1243                         break;
1244                 case 'n':
1245                         noauto_pt = 1;
1246                         break;
1247                 case 'o':
1248                         outarg = optarg;
1249                         break;
1250                 case 's':
1251                         act = ACT_SHOWSIZE;
1252                         break;
1253                 case 't':
1254                 {
1255                         struct fdisk_label *lb = NULL;
1256
1257                         while (fdisk_next_label(cxt, &lb) == 0)
1258                                 fdisk_label_set_disabled(lb, 1);
1259
1260                         lb = fdisk_get_label(cxt, optarg);
1261                         if (!lb)
1262                                 errx(EXIT_FAILURE, _("unsupported disklabel: %s"), optarg);
1263                         fdisk_label_set_disabled(lb, 0);
1264                         break;
1265                 }
1266                 case 'u':
1267                         if (optarg && *optarg == '=')
1268                                 optarg++;
1269                         if (fdisk_set_unit(cxt, optarg) != 0)
1270                                 errx(EXIT_FAILURE, _("unsupported unit"));
1271                         break;
1272                 case 'V': /* preferred for util-linux */
1273                 case 'v': /* for backward compatibility only */
1274                         print_version(EXIT_SUCCESS);
1275                 case 'w':
1276                         wipemode = wipemode_from_string(optarg);
1277                         if (wipemode < 0)
1278                                 errx(EXIT_FAILURE, _("unsupported wipe mode"));
1279                         break;
1280                 case 'W':
1281                         pwipemode = wipemode_from_string(optarg);
1282                         if (pwipemode < 0)
1283                                 errx(EXIT_FAILURE, _("unsupported wipe mode"));
1284                         break;
1285                 case 'h':
1286                         usage();
1287                 case OPT_BYTES:
1288                         fdisk_set_size_unit(cxt, FDISK_SIZEUNIT_BYTES);
1289                         break;
1290                 case OPT_LOCK:
1291                         lockmode = "1";
1292                         if (optarg) {
1293                                 if (*optarg == '=')
1294                                         optarg++;
1295                                 lockmode = optarg;
1296                         }
1297                         break;
1298                 default:
1299                         errtryhelp(EXIT_FAILURE);
1300                 }
1301         }
1302
1303         if (argc-optind != 1 && fdisk_has_user_device_properties(cxt))
1304                 warnx(_("The device properties (sector size and geometry) should"
1305                         " be used with one specified device only."));
1306
1307         colors_init(colormode, "fdisk");
1308         is_interactive = isatty(STDIN_FILENO);
1309
1310         switch (act) {
1311         case ACT_LIST:
1312         case ACT_LIST_DETAILS:
1313                 fdisk_enable_listonly(cxt, 1);
1314
1315                 if (act == ACT_LIST_DETAILS)
1316                         fdisk_enable_details(cxt, 1);
1317
1318                 init_fields(cxt, outarg, NULL);
1319
1320                 if (argc > optind) {
1321                         int k;
1322
1323                         for (rc = 0, k = optind; k < argc; k++)
1324                                 rc += print_device_pt(cxt, argv[k], 1, 0, k != optind);
1325
1326                         if (rc)
1327                                 return EXIT_FAILURE;
1328                 } else
1329                         print_all_devices_pt(cxt, 0);
1330                 break;
1331
1332         case ACT_SHOWSIZE:
1333                 /* deprecated */
1334                 if (argc - optind <= 0) {
1335                         warnx(_("bad usage"));
1336                         errtryhelp(EXIT_FAILURE);
1337                 }
1338                 for (i = optind; i < argc; i++) {
1339                         uintmax_t blks = get_dev_blocks(argv[i]);
1340
1341                         if (argc - optind == 1)
1342                                 printf("%ju\n", blks);
1343                         else
1344                                 printf("%s: %ju\n", argv[i], blks);
1345                 }
1346                 break;
1347
1348         case ACT_FDISK:
1349                 if (argc-optind != 1) {
1350                         warnx(_("bad usage"));
1351                         errtryhelp(EXIT_FAILURE);
1352                 }
1353
1354                 /* Here starts interactive mode, use fdisk_{warn,info,..} functions */
1355                 color_scheme_enable("welcome", UL_COLOR_GREEN);
1356                 fdisk_info(cxt, _("Welcome to fdisk (%s)."), PACKAGE_STRING);
1357                 color_disable();
1358                 fdisk_info(cxt, _("Changes will remain in memory only, until you decide to write them.\n"
1359                                   "Be careful before using the write command.\n"));
1360
1361                 devname = argv[optind];
1362                 rc = fdisk_assign_device(cxt, devname, 0);
1363                 if (rc == -EACCES) {
1364                         rc = fdisk_assign_device(cxt, devname, 1);
1365                         if (rc == 0)
1366                                 fdisk_warnx(cxt, _("Device is open in read-only mode."));
1367                 }
1368                 if (rc)
1369                         err(EXIT_FAILURE, _("cannot open %s"), devname);
1370
1371                 if (fdisk_device_is_used(cxt))
1372                         fdisk_warnx(cxt, _(
1373                         "This disk is currently in use - repartitioning is probably a bad idea.\n"
1374                         "It's recommended to umount all file systems, and swapoff all swap\n"
1375                         "partitions on this disk.\n"));
1376
1377                 fflush(stdout);
1378
1379                 if (!fdisk_is_readonly(cxt)
1380                     && blkdev_lock(fdisk_get_devfd(cxt), devname, lockmode) != 0) {
1381                         fdisk_deassign_device(cxt, 1);
1382                         fdisk_unref_context(cxt);
1383                         return EXIT_FAILURE;
1384                 }
1385
1386                 if (fdisk_get_collision(cxt))
1387                         follow_wipe_mode(cxt);
1388
1389                 if (!fdisk_has_label(cxt)) {
1390                         fdisk_info(cxt, _("Device does not contain a recognized partition table."));
1391                         if (!noauto_pt)
1392                                 fdisk_create_disklabel(cxt, NULL);
1393
1394                 } else if (fdisk_is_label(cxt, GPT) && fdisk_gpt_is_hybrid(cxt))
1395                         fdisk_warnx(cxt, _(
1396                                   "A hybrid GPT was detected. You have to sync "
1397                                   "the hybrid MBR manually (expert command 'M')."));
1398
1399                 init_fields(cxt, outarg, NULL);         /* -o <columns> */
1400
1401                 if (!fdisk_is_readonly(cxt)) {
1402                         fdisk_get_partitions(cxt, &original_layout);
1403                         device_is_used = fdisk_device_is_used(cxt);
1404                 }
1405
1406                 while (1)
1407                         process_fdisk_menu(&cxt);
1408         }
1409
1410         fdisk_unref_context(cxt);
1411         return EXIT_SUCCESS;
1412 }